Τι λένε οι χρήστες - Σύνταξη κριτικής
Δεν εντοπίσαμε κριτικές στις συνήθεις τοποθεσίες.
acetic acid addition admixture alcohol Alizarin alkalies amount appear artificial artists atoms Barium base become brilliant Brown Cadmium calcium called carbon Carmine characteristic chemical chloride chromate Chrome Yellow clay Cobalt color combined composed composition compounds considerable constituent containing copper deep dilute dioxide dissolved durable earth elements employed give gray Green heated hydrochloric acid hydrogen hydroxide important insoluble iron known lake lake colors lake pigments less light Madder manufacture matter ments metallic mineral mixed mixture natural nitric obtained ochres organic oxide oxygen painting permanent physical pigments potassium powder precipitate prepared presence principally produced properties Prussian Blue pure reaction readily salts sodium soluble solution sometimes strong substances sulphate sulphide sulphur sulphuric acid techniques temperature tinting transparent Ultramarine usually variety various varying Vermilion violet washed weight White Lead Yellow yield Zinc Zinc White
Σελίδα 208 - CAPACITY. marked. 4 gills = 1 pint pt. 2 pints -. 1 quart i/f. 4 quarts = 1 gallon gal. 2 gallons = 1 peck pk, 4 pecks ~ 1 bushel /<».-„'• . 8 bushels = 1 quarter qr.
Σελίδα 206 - MEASURE 144 sq. in. = 1 sq. ft. 9 sq. ft. = 1 sq. yd.
Σελίδα 207 - APOTHECARIES' WEIGHT. 20 grains (gr.) = 1 scruple (3). 3 scruples = 1 dram (3). 8 drams = 1 ounce ( 5 ). 12 ounces = 1 pound (ft).
Σελίδα 208 - In counting many kinds of articles we use these measures : 12 things = 1 dozen (doz.) 12 dozen = 1 gross (gr.) 12 gross = 1 great gross (G. gr.) 20 things = 1 score...
Σελίδα 181 - Triclinic CHRYSOCOLLA, 383 CuSiO3.nH2O Amorphous The United States produces about 30 per cent of the world's copper. Copper is used most extensively for the transmission of electricity and in castings and alloys. Brass consists of copper and zinc; German silver of copper, zinc, and nickel; bronze and bell metal of copper, tin, and zinc.
Σελίδα 155 - An acid is a hydrogen compound whose water solution contains hydrogen ions.
Σελίδα 207 - Apothecaries' weight: 20 grains = 1 scruple; 3 scruples = 1 dram; 8 drams = 1 ounce; 12 ounces = 1 pound.
Σελίδα 58 - Soon after the discovery of Eosin dye, in 1876, many lake pigments were introduced having this powerful and brilliant, but exceedingly fugitive dye as the coloring principal on various bases. The Geranium Lakes used principally in the fine arts are precipitated on the transparent alumina hydrate base. This color when produced from fugitive dyes, such as Eosin, Erythrosine, etc., fades in, very short time and should not be used, even if only a fair amount of permanence is required.
Σελίδα 45 - Perkin discovered a beautiful violet compound, mauve, while experimenting with aniline. During the next few years he established the manufacture of mauve on a commercial basis. This proved to be the starting point for a great industry for the preparation of thousands of different colors of almost every conceivable hue by synthetic processes.